package com.kjj.user.interceptor;

import com.kjj.user.domain.Logininfo;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
import java.util.concurrent.TimeUnit;

@Component
public class LoginInterCeptor implements HandlerInterceptor {
    @Autowired
    private RedisTemplate redisTemplate;
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader("token");
        if (StringUtils.isNotBlank(token)) {
            Logininfo logininfo = (Logininfo) redisTemplate.opsForValue().get(token);
            if (logininfo != null) {//已经登录
                //TODO 判断是否有权限 把权限管理系统的代码逻辑拷贝过来
                redisTemplate.opsForValue().set(token,logininfo,30, TimeUnit.MINUTES);
                return true;
            }
        }
        //登录失败 TODO
        response.setCharacterEncoding("utf-8");
        response.setContentType("application/json; charset=UTF-8");
        PrintWriter writer = response.getWriter();
        // 在外面写好在拷贝进去
        writer.write("{\"success\":false,\"message\":\"noLogin\"}");
        writer.close();
        return false;
    }
}
